Vise



.G. E. WEAVER ET AL VISE Filed Jan. 2, 1926 Patented Nov.4 20,219.28. UNITED STATE-s;

GAILAnp nfwnAvEa AND WILLIAM o. una or am:Neil'niLirr,v ILLINOIS', AssxeNons To wnAvEa MANUFACTURING COMPANY, orsrnnrermn, ILLINoIs, A

-- CORPORATION Ol' ILLINOIS.

Application med vJanuary Our invention concerns' vises or holding especially for holding a vertically-disposed body, such as a shaft,although its use 1s not linuted in this respect.

When employed during application the end which receives forced thereon by a press or plunger ap ropriate form.

o permit those trained in this art "to haver a' full and complete understanding of the 1n-v vention and its' various advantages, inthe accompan ing drawing 'forming a part of this speci cation, and throughout the several views of which like reference characters have been used to designate the same parts, a' present desirable and. preferred embodiment of the invention has been illustrated in detail.

In this drawing:

Figure 1 is an elevation of the new vise resting on suitable bolster-plates shown in sec-l tion, the visev being indicated as grippinga shaft during the application of a gear thereto by a `power piston or plunger;

Figure 2 is a plan view of the new vise showing the gripped shaft'in section; and Figure 3 is a vertical, central, longitudinal section through the vise indicating its grippin 'action on a shaft illustrated fragmentari y.'I

By reference to the pluralit of views of this drawing, it will be perceived that the novel vise or improved gripping appliance is adapted to be used by resting it on the bolster sideplates 10, of a press, not otherwise illustrated, except that its -forcing plunger orpiston 11 is partlyshown.

In order t'o maintain such vise incorrect and pro er position on the spaced or separate'd bo sterlates, its main body 12 hasl a depending ri 13, the opposite sections or portions of which are spaced apart the proper amount to be correctly received between the bolster-plates, whereby the vise cannot accidentally be displaced or shifted laterally.

To stren hen the appliance, such main member 12 as a substantial outstandin -rib 14 of the general shape'and form depicted new vise is .adapted to -be used more VIBE a, me. semi No. 78,770. l

y lindrical bearing 16 opemng into'or communieating directly with the center cavity or space ofA the appliance.

g vSuchvbearin accommodates and rockingl 0 'ai gear to ashaft the vise grips the latternear t e gear and holds it firmly and securely while the gear is being eff 'my' receives one cy indrical end 17 cfa short 11n 1.8 having its opposite cylindrical. end 19 rockyinounted in a similar bearing'21 in the n' ,iitfeifface ofa vise 'aw or blockf22, such bearing bein at a igher elevation than the companion earin 16, whereby the link assumesan upward y inwardly-inclined position', as clearly shown in Figure 3.

` The oppositecompanion or complementary jaw or block 23 of the vise is similar to but reversed with relation to, the element 22, having itsnbearing 24'receivin the rounded terminal part 25 of a like lin V26, the opposite end 27 of which'is mounted in a correspondl l bearing 28 in an adjustable block 29.

clined as is fully presented in Figure 3.

Member 29 may be adjusted toward and from the wall 15 by means of a screw 31, extended through a vthreadedbearing in the upright wall 32 of the vise', and equlpped at its outer end with a knurled handle 33 by vwhich it may be readily and easily turned4 to effect theadjustment, and having its inner, annularly-grooved end mounted for turnin in, and held against retraction or withdrawa from, a bearin 34 in the outer face of the movable or adjustable block 29, a lcrossin 35 in the groove of the screw and locatecfin a hole in the block retaining the parts in assembled relation as will be readily understood.

The inner complementary faces of the movable jaws 22 and 23 are provided with y serrated or roughened, shallow, V-shaped grooves 36, 36 to enable such members to engage and irmly and eii'ectively grasp and clam the body to be held even though it ma e round 1n shape.

n order to hold the companion jaws normally in elevated position, coiled springs 37, 37 are mounted in recesses or cavities in the vise with their top ends pressing upwardly against the under faces of the jaws.

" To limit the ascent of the jaws and to act position in the recesses of the expanded, elevated jaws and the gear is properly located for application to the shaft.

The downward pressure of the plunger or piston 11 on the gear is transmitted more or less to the shaft and the sli ht downward movement of the latter is carrie to the enga ing jaws which swing downwardlya sma amount thereby very firmly and securely holding the shaft against further descent, it

` bein obvious that the greater the pressure apphed to the shaft, the greater the holding action of the jaws which operate somewhat as a very powerful toggle.

The construction is such that the links of the hinged or rocking jaws cannot. become ali ned with one another and their jaws loc ed together even though such jaws may descend sufficiently to contact with the part of the main body just below them which acts as an abutment or limiting stop for the descentof thejaws. l

It will be noted that this device ips or grasps the sha-ft at a position near w ere the gear is applied and not at a remote location, it being apparent that the ing action of the jaws on t to mar the latter somewhat, but since it is l out the vertical lengths o not customary to finish or machine such a shaft except those parts accommodated by the bearings, no inju occurs.

In view of the'fact t at the more or less circular ends of the links are so arranged with their companion parts that lines drawn through the centers of such circles will not become parallel or in register when the jaws are forced down as far as they will go, it is impossible to lock the jaws against free o ening action which occurs as' soon as the oad or pressure is removed by reason ofthe auto- `matic expansion of the underlying springs which force the jaws upwardly to release the clamped article. A

As has been fully illustrated, the links are pivoted to the jaws -slightly nearer the bottoms of the 'aws than their tops in order to provide uni orm gripping plressure throught e jaws.

It will'be readily appreciated that considerable friction ma exist between the links and the jaws and tween the links and the stationary and adjustable blocks and when.

the pressure is applied downwardly on the jaws, there is a tendency for their top pors 1n or clamp= J e may tend tions to close in faster on the work than their bottom sections. This would cause the jaws to gripxharder at'the top than at the bottom were t is tendency not overcome by arranging the links somewhat below center so that the gripping action will be uniform throughout their lengths.

An understandncr of the construction and mode of operation of the improved vise of this character will indicate that while it is simple in structure, and hence relatively inexpenslve to manufacture, it is efl'ective in performin its required functions without likelihood o becoming injured in ordinary service.

Nor is it ossible to have the movable arts of the app iance become set or locke the device rea ily and comparatively easily freeing tie held body when such action is require t Those skilled in this art will readily understand that the invention is not linuted and restricted to the precise and exact details presented since these may be modified with- 1n comparatively wide limits without depar'ture from the heart and essence of the invention and without the sacrifice of lany of its substantial benefits and advantages, the scope of the invention, being defined by the appended claims.

We claim:

1. In avise, the combination of a substantially C-shaped support open at one side, a

v jaw movable at substantially right-angles to the plane of the C to engage one side of the i body to be clamped by` the vise, a link connecting said jaw to said support, a. second 'aw movable at substantially right-angles to the plane of the C to engage the opposite side of said body, a block adjustable on said support toward and from said first jaw, and a link connecting said second jaw to said block, whereby movements of the jaws with the body cause their increased clam ing action on the latter due to the rocking o said links, said jaws registering` with the opening at the side of said support.

2. In a vise, the combination of a substantially C-shaped support open at one side, a jaw movable at substantially right-angles to the plane of the C to engage one side of the `their increased clamping action on the latter due to the rockin of said links, said jaws registering with t e openin at the side of said support, and means ten ing to rock said jaws automatically to open position.

3. In a vise, the combination of a substantially C-shaped support, a jaw Amovable at substantially right-angles to the plane of the C adapted to engage a side of the body to be clamped and to travel therewith, a second jaw movable at substantially right-angles to theplane of the C to engage the opposite side of said body, a block adjustable toward and from said first aw, an inclined link connecting said second jaw to said block and of itself alone causing said second jaw to approach or recede from said first jaw as the former is moved, and a stop to prevent said link from assuming a non-inclined position with reference to said support and hence preventing such jaw from becoming locked on the body engaged thereby.

4. In a vise, the combination of a substantiallyC-shaped support, a block adjustable on said support, a pair of jawsmovable at substantially right-angles to the plane of the C adapted to engage opposite sides of and to travel with the body tobe clamped by the vise, oppositely-inclined links connectin said jaws respectively to said support and lock and of themselves alone causing said jaws to approach or recede from one another as the jaws are moved, and means to prevent said links from assuming aligned positions.

5. In a vise, the combination of a substantially`C-shaped support, a pair of jaws movable at substantially right-angles to the plane of the C adapted to engage opposite sides of and to travel with the body to be clamped thereby, and a pair of oppositely inclined links connecting said jaws to said support and of themselves alone causing said jaws to approach or recede from one another as they are moved relatively to said support, the pivotal connections of said links with said jaws being lower than the centers of the latter to secure a more uniform clamping action of the jaws on the body.

6. In a vise, the combination of a substantially C-shaped support, a jaw movable at substantially right-angles to the plane of the C adapted to engage a side of and to travel with the body to be clamped by the vise, a

inclined link connecting said second jaw to said support and of itself alone causing said second jaw to approach or recede from said iirst jaw when said second jaw is moved to rock said link, the pivotal connection of said linkt with said jaw being lower than the said links from assuming aligned positions i hence preventing the jaws from becoming locked on said body, the pivotal connections of said links with said jaws being lower than the centers of the latter to secure a more uniform clamping action of the jaws on the body, and means tending to move said jaws automatically to open position.

8. In a vise, 4the combination of a substantially C-shaped support open at one side, a jaw movable at substantially right angles to the plane of the C to engage one side of the body to be clamped by the vise, an inclined link connecting said jaw to said support, a second jaw movable at substantially rightangles to the plane of the C to engage the opposite side .of said body, a block adjustable on said support toward and from said irst jaw, an inclined link connecting said second jaw tol said block, whereby movements of the jaws with the body cause their increased j clamping action on the latter due to the rocking of said links, said jaws registering with the opening at the side of said support, means to prevent saidlinks from assuming aligned positions hence preventing the jaws from becoming locked on said body, the pivotal connections of said links with said jaws being lower than the centers of the latter to secure a more uniform clamping action of the jaws on\the body, and means tending to move said jaws automatically to open position. v GAILARD EfWEAVER.

WILLIAM C. KEIM. 

